Thursday, December 8, 2011

JCL: What is SRB


SRB: Acronym for Service Request Block. In the MVS operating system, one way in which an application program can request that work be performed by MVS is to create an SRB--a formatted control block defining the work request in conformance with the MVS API--and to pass the address of the SRB to MVS with a request to perform the work specified in the SRB. See also API, TCB.
In Joblog, IEF374I/IEF032I message has CPU and SRB times. Here CPU time indicates the time spend on program logic. SRB time indicates the times spend on I/O.

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